fd548c96cc
Move M_* flags down in the file. Move SchedClass up in the
...
TargetInstrDescriptor class and shrink to 16-bits, saving a
word in TargetInstrDescriptor. Add some comments.
llvm-svn: 45686
2008-01-07 05:06:49 +00:00
8c69898157
remove a dead field.
...
llvm-svn: 45685
2008-01-07 04:57:42 +00:00
6f8713decb
the name field of instructions is never set to a non-empty string,
...
just unconditionally use the def name of the instruction.
llvm-svn: 45684
2008-01-07 04:57:31 +00:00
6077962101
no need to explicitly clear these fields.
...
llvm-svn: 45683
2008-01-07 04:55:09 +00:00
f7c3ff6f80
Fix typo
...
llvm-svn: 45682
2008-01-07 04:01:26 +00:00
c75405bdb3
Removing a leaked file.
...
llvm-svn: 45681
2008-01-07 03:23:52 +00:00
b0d06b4381
Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor
...
llvm-svn: 45680
2008-01-07 03:13:06 +00:00
f0f438a517
remove MachineOpCode typedef.
...
llvm-svn: 45679
2008-01-07 02:48:55 +00:00
d34c47653e
remove some uses of MachineOpCode, move getSchedClass
...
into TargetInstrDescriptor from TargetInstrInfo.
llvm-svn: 45678
2008-01-07 02:46:03 +00:00
e55e115616
Add predicates methods to TargetOperandInfo, and switch all clients
...
over to using them, instead of diddling Flags directly. Change the
various flags from const variables to enums.
llvm-svn: 45677
2008-01-07 02:39:19 +00:00
c7e991b7c3
Setting GlobalDirective in TargetAsmInfo by default rather than
...
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.
llvm-svn: 45676
2008-01-07 02:31:11 +00:00
efb08802ec
Deleting an empty file. Thanks, /usr/bin/patch!
...
llvm-svn: 45675
2008-01-07 02:29:04 +00:00
a98c679de0
Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects
...
that it is cheap and efficient to get.
Move a variety of predicates from TargetInstrInfo into
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around. Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.
Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.
llvm-svn: 45674
2008-01-07 01:56:04 +00:00
0ec92e9d64
Update CodeGen for MRegisterInfo --> TargetInstrInfo changes.
...
llvm-svn: 45673
2008-01-07 01:35:56 +00:00
2a3be7bb6c
Move even more functionality from MRegisterInfo into TargetInstrInfo.
...
Some day I'll get it all moved over...
llvm-svn: 45672
2008-01-07 01:35:02 +00:00
2d684b1fbf
Ammending r45669 with a missing file.
...
llvm-svn: 45671
2008-01-07 01:33:09 +00:00
6047b6e140
With this patch, the LowerGC transformation becomes the
...
ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.
Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):
; shadowstack prologue
movl L_llvm_gc_root_chain$non_lazy_ptr, %eax
movl (%eax), %ecx
movl $___gc_fun, 20(%esp)
movl $0, 24(%esp)
movl $0, 28(%esp)
movl $0, 32(%esp)
movl $0, 36(%esp)
movl $0, 40(%esp)
movl $0, 44(%esp)
movl $0, 48(%esp)
movl $0, 52(%esp)
movl %ecx, 16(%esp)
leal 16(%esp), %ecx
movl %ecx, (%eax)
; shadowstack loop overhead
(none)
; shadowstack epilogue
movl 48(%esp), %edx
movl %edx, (%ecx)
; shadowstack metadata
.align 3
___gc_fun: # __gc_fun
.long 8
.space 4
In comparison to LowerGC:
; lowergc prologue
movl L_llvm_gc_root_chain$non_lazy_ptr, %eax
movl (%eax), %ecx
movl %ecx, 48(%esp)
movl $8, 52(%esp)
movl $0, 60(%esp)
movl $0, 56(%esp)
movl $0, 68(%esp)
movl $0, 64(%esp)
movl $0, 76(%esp)
movl $0, 72(%esp)
movl $0, 84(%esp)
movl $0, 80(%esp)
movl $0, 92(%esp)
movl $0, 88(%esp)
movl $0, 100(%esp)
movl $0, 96(%esp)
movl $0, 108(%esp)
movl $0, 104(%esp)
movl $0, 116(%esp)
movl $0, 112(%esp)
; lowergc loop overhead
leal 44(%esp), %eax
movl %eax, 56(%esp)
leal 40(%esp), %eax
movl %eax, 64(%esp)
leal 36(%esp), %eax
movl %eax, 72(%esp)
leal 32(%esp), %eax
movl %eax, 80(%esp)
leal 28(%esp), %eax
movl %eax, 88(%esp)
leal 24(%esp), %eax
movl %eax, 96(%esp)
leal 20(%esp), %eax
movl %eax, 104(%esp)
leal 16(%esp), %eax
movl %eax, 112(%esp)
; lowergc epilogue
movl 48(%esp), %edx
movl %edx, (%ecx)
; lowergc metadata
(none)
llvm-svn: 45670
2008-01-07 01:30:53 +00:00
5180e85675
Enabling the target-independent garbage collection infrastructure by hooking it
...
up to the various compiler pipelines.
This doesn't actually add support for any GC algorithms, which means it
temporarily breaks a few tests. To be fixed shortly.
llvm-svn: 45669
2008-01-07 01:30:38 +00:00
b296b0f1c1
The pic base can't be duplicated.
...
llvm-svn: 45668
2008-01-06 23:49:32 +00:00
a4ce4f6987
rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate.
...
llvm-svn: 45667
2008-01-06 23:38:27 +00:00
4d3b0f579c
rearrange some code.
...
llvm-svn: 45666
2008-01-06 22:50:31 +00:00
e2949f42d3
some simplifications/cleanups to ?: sema.
...
llvm-svn: 45665
2008-01-06 22:42:25 +00:00
cfb6f430b6
Emit warnings like "dereferencing void pointer" instead of trying to
...
pretty print the type name for void.
llvm-svn: 45664
2008-01-06 22:21:46 +00:00
db911e9037
Modify Makefile.rules to allow makefiles to prepend to C.Flags and
...
fiends. Change Makefile.ocaml to not touch CFLAGS.
llvm-svn: 45663
2008-01-06 21:54:35 +00:00
2a1993fb2c
improve description of alignment, patch by Alain Frisch.
...
llvm-svn: 45662
2008-01-06 21:04:43 +00:00
ec56402557
Fix typo noticed by 'Danny' in PR1901
...
llvm-svn: 45661
2008-01-06 19:51:52 +00:00
466e8ebcc7
back out accidental commit.
...
llvm-svn: 45660
2008-01-06 19:19:32 +00:00
460d863ba5
fix an accidental commit that broke all the testers :(
...
llvm-svn: 45659
2008-01-06 19:18:52 +00:00
404eb05247
The transform that tries to turn calls to bitcast functions into
...
direct calls bails out unless caller and callee have essentially
equivalent parameter attributes. This is illogical - the callee's
attributes should be of no relevance here. Rework the logic, which
incidentally fixes a crash when removed arguments have attributes.
llvm-svn: 45658
2008-01-06 18:27:01 +00:00
55e5090fe8
When transforming a call to a bitcast function into
...
a direct call with cast parameters and cast return
value (if any), instcombine was prepared to cast any
non-void return value into any other, whether castable
or not. Add a new predicate for testing whether casting
is valid, and check it both for the return value and
(as a cleanup) for the parameters.
llvm-svn: 45657
2008-01-06 10:12:28 +00:00
10324d0175
rename isStore -> mayStore to more accurately reflect what it captures.
...
llvm-svn: 45656
2008-01-06 08:36:04 +00:00
1694a53c5d
Remove an unused variable.
...
llvm-svn: 45655
2008-01-06 07:43:13 +00:00
a348f55ec6
Change the 'isStore' inferrer to look for 'SDNPMayStore'
...
instead of "ISD::STORE". This allows us to mark target-specific dag
nodes as storing (such as ppc byteswap stores). This allows us to remove
more explicit isStore flags from the .td files.
Finally, add a warning for when a .td file contains an explicit
isStore and tblgen is able to infer it.
llvm-svn: 45654
2008-01-06 06:44:58 +00:00
f4d55ec4e8
remove explicit isStore flags that are now inferrable.
...
llvm-svn: 45653
2008-01-06 05:55:01 +00:00
e20f380fbf
remove some isStore flags that are now inferred automatically.
...
llvm-svn: 45652
2008-01-06 05:53:26 +00:00
e9dba0920b
describe isStore and simplify the implementation of hasUnmodelledSideEffects.
...
No functionality change.
llvm-svn: 45651
2008-01-06 05:43:21 +00:00
89c6566577
set the 'isstore' flag for instructions whose pattern is an
...
intrinsic that writes to memory.
llvm-svn: 45650
2008-01-06 05:36:50 +00:00
0e519bb555
Accept both %y, %x and %x, %y as valid answers.
...
llvm-svn: 45649
2008-01-06 03:12:44 +00:00
e457fd1e9b
remove some old hacky code that tried to infer whether a store
...
occured in a pattern, but failed miserably. The new code works for
any instruction that has a store in its pattern, including all the
x86 mem op mem instructions.
The only target-independent code that uses this is branch folding,
so this won't change anything in practice.
llvm-svn: 45648
2008-01-06 02:16:26 +00:00
27a4c1515a
rearrange some code to allow inferring instr info from the pattern of the instr, but don't do so yet.
...
llvm-svn: 45647
2008-01-06 01:53:37 +00:00
d5326def4a
improve const correctness.
...
llvm-svn: 45646
2008-01-06 01:52:22 +00:00
ea2d52d867
Split the impl of CodeGenInstruction out to its own .cpp file, add a getName() accessor.
...
llvm-svn: 45645
2008-01-06 01:35:39 +00:00
85467a17ae
final cleanups.
...
llvm-svn: 45644
2008-01-06 01:21:51 +00:00
626b89daa4
further simplifications and cleanup
...
llvm-svn: 45643
2008-01-06 01:20:13 +00:00
827efa451f
simplify some code
...
llvm-svn: 45642
2008-01-06 01:12:44 +00:00
ab3242fd46
rename CodegenDAGPatterns -> CodeGenDAGPatterns
...
llvm-svn: 45641
2008-01-06 01:10:31 +00:00
e59a3c79e5
split enum emission out from InstrInfoEmitter into it's own tblgen backend.
...
llvm-svn: 45640
2008-01-06 00:49:05 +00:00
78ac0747e7
fix build on case sensitive file systems.
...
llvm-svn: 45639
2008-01-05 23:37:52 +00:00
5fa2c64b78
Fix comment.
...
llvm-svn: 45638
2008-01-05 23:30:51 +00:00
7eac714b41
make this build with newer gcc's
...
llvm-svn: 45637
2008-01-05 23:29:51 +00:00
Chris Lattner